checkbutton.rb in ffi-tk-2018.02.20

- old
+ new

@@ -1,5 +1,6 @@
+# frozen_string_literal: true
 require_relative '../../helper'
 
 describe Tk::Tile::CheckButton do
   it 'initializes' do
     instance = Tk::Tile::CheckButton.new
@@ -8,6 +9,5 @@
   end
 
   it 'needs more specs' do
   end
 end
-